Smog Clouds China

Updated Jan. 30, 2013 12:04 p.m. ET

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A woman covered her face with her sweater in the heavy smog Wednesday in Haozhou, in central China's Anhui province. China issued health warnings to residents as dense smog blanketed swaths of the country.
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Seen from above, cars drove through Beijing's central business district Wednesday, as a thick cloud of toxic air choked the capital for the third consecutive day.
Jason Lee/Reuters…

A cyclist wore a mask on a street in Beijing Wednesday. Street lamps and the outlines of buildings receded into a white haze.
How Hwee Young/European Pressphoto Agency…

On Wednesday, Chinese multimillionaire Chen Guangbiao, right, who made his fortune in the recycling business and is a high-profile philanthropist, handed out soda pop-sized cans of air, purportedly from far-flung, pristine regions of China.
Barry Huang/Reuters…

A man walked on a street in Beijing Wednesday. Beijing's city government on Tuesday ordered 103 heavily polluting factories to suspend production.
How Hwee Young/European Pressphoto Agency…

Beijing residents wore masks Wednesday. Beijing officials also told government departments and state-owned enterprises to reduce their use of cars by a third, Xinhua said. The measures last until Thursday.
Feng Li/Getty Images…

A man fished near a temple beside a river in Beijing's Gaobeidian village.
Jason Lee/Reuters…

The sun was partly obscured by a cloud in the heavy smog in Jilin, northeast China's Jilin province, Tuesday.
AFP/Getty Images…